---
title: fetchRecordChangesCompletionBlock
framework: cloudkit
role: symbol
role_heading: Instance Property
path: cloudkit/ckfetchrecordchangesoperation/fetchrecordchangescompletionblock
---

# fetchRecordChangesCompletionBlock

The block to execute when the system finishes processing all changes.

## Declaration

```swift
var fetchRecordChangesCompletionBlock: ((CKServerChangeToken?, Data?, (any Error)?) -> Void)? { get set }
```

## Discussion

Discussion The block returns no value and takes the following parameters: When implementing this block, check the moreComing property of the operation object to verify that the server was able to deliver all results. If that property is true, you must create another operation object using the value in the serverChangeToken parameter to fetch any remaining changes. The operation object executes this block only once at the conclusion of the operation. It executes after all individual change blocks, but before the operation’s completion block. The block executes serially with respect to the other progress blocks of the operation. If you intend to use this block to process results, set it before executing the operation or submitting the operation object to a queue.

## See Also

### Processing the Fetch Record Changes Results

- [recordChangedBlock](cloudkit/ckfetchrecordchangesoperation/recordchangedblock.md)
- [recordWithIDWasDeletedBlock](cloudkit/ckfetchrecordchangesoperation/recordwithidwasdeletedblock.md)